The Black: Evolution

In "The Black: Evolution," Shawna Sigler and Catfish, having narrowly escaped a catastrophic oil rig incident, find themselves under the watch of a covert government agency. They are drawn into a classified project to research the mysterious M2 substance and the creatures it spawned, but as they conduct experiments in a secret underground lab, they notice unsettling evolutionary trends in the samples. This installment ties together the narratives of the previous three books while building on the M2 mythos, ultimately leading to a dramatic conclusion.